* Move ToastContext and utilities to shared components
* lint
* fix type
* cleanup
* fix broken test
* fix lint
* Add more tests for ToastContext
* Potential fix for pull request finding 'Unused variable, import, function or class'
Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>
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Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>